Carbs and more

Hi guys, I just picked up a 98 650.
I don't know much about carburetors but I'm told they are likely gunked up from the bike sitting the majority of 4 years. Aside from getting those cleaned is there anything else I should get done. The bike runs but stalls out when sitting after riding a while.

(05-31-2016, 10:36 PM)Ew44 Wrote: Hi guys, I just picked up a 98 650.
I don't know much about carburetors but I'm told they are likely gunked up from the bike sitting the majority of 4 years. Aside from getting those cleaned is there anything else I should get done. The bike runs but stalls out when sitting after riding a while.

(06-02-2016, 07:36 PM)Ew44 Wrote: Seafoam right in the tank? Run the motor then let it sit?

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yes run the sea foam through the system mixed with your fuel, if it doesn't clear up the pilot jets are easily removed and cleaned from under the fuel bowl, you'll need to file the tip of a #2 phillips bit, get it to fit the brass JIS bowl screws real tight or you can stripp the heads real easy because there made of very soft brass, those pilot jets are for idle and just off idle up to around 1/4 throttle, you don't need to remove the carbs to clean jets, i only remove them for cleaning if i think the internal passages are clogged after i try cleaning the high and low speed jets with the carbs mounted

(06-08-2016, 10:20 PM)Ew44 Wrote: Ran the seafoam through it yesterday. I injected it right into the fuel line. Also drained the fuel out. I'm gonna refill with premium and put the rest of the foam in the tank

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Did it clear up? Also, my '03 vstar 650 calls for at least 91 octane fuel, and if I'm not mistaken the '98 does as well..
Should be a sticker on the bottom right side of bike on the frame with various info.

(06-08-2016, 10:20 PM)Ew44 Wrote: Ran the seafoam through it yesterday. I injected it right into the fuel line. Also drained the fuel out. I'm gonna refill with premium and put the rest of the foam in the tank

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Did it clear up? Also, my '03 vstar 650 calls for at least 91 octane fuel, and if I'm not mistaken the '98 does as well..
Should be a sticker on the bottom right side of bike on the frame with various info.

It runs better but I've only ridden 12 miles since I've done the work. My mechanic has been too busy to change the tires. He just took it the other day. It no longer stalls when i stop it but it doesn't want to restart at times after shutting it off. Once i can ride a tank through it ill reevaluate

you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?

(08-04-2016, 07:00 PM)nick59 Wrote: you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?

Thank you for this info! Seriously. Let me go pull my plugs and check my manual. All this time I've been using premium....

(08-04-2016, 07:11 PM)TwoWheels Wrote:

(08-04-2016, 07:00 PM)nick59 Wrote: you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?

Thank you for this info! Seriously. Let me go pull my plugs and check my manual. All this time I've been using premium....

I'd say yes, they are definitely black:

So manual calls for 86(r+m)/2 or 91 RON.. So 86 octane it is. Jeez. Well there's always more to learn. Thanks for the info.

(08-04-2016, 07:00 PM)nick59 Wrote: you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?

Thank you for this info! Seriously. Let me go pull my plugs and check my manual. All this time I've been using premium....

(08-04-2016, 07:11 PM)TwoWheels Wrote:

(08-04-2016, 07:00 PM)nick59 Wrote: you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?

Thank you for this info! Seriously. Let me go pull my plugs and check my manual. All this time I've been using premium....

I'd say yes, they are definitely black:

So manual calls for 86(r+m)/2 or 91 RON.. So 86 octane it is. Jeez. Well there's always more to learn. Thanks for the info.

(08-04-2016, 07:00 PM)nick59 Wrote: you should google the RON octane. ron is used in europe and is higher than we use .the owners manual states 87 octane i use 87 in my 1100 and it runs excellant.higher octane is if you have valve knock.higher octane burns slower so you would get a carbon problem. are your plugs black?